.item-3 .container{
    height: 100%;
    display: none;
    position: relative;
}

.item-3 .bg-img {
    width: 541px;
    position: absolute;
    right: 0%;
    bottom: 0;
    opacity: .5;
    animation: bg-img .5s ease;
}
.item-3 .bg-img  img{
    width: 100%;
    display: block;
}

.item-3 .sm-img {
    opacity: 0;
    width: 309px;
    position: absolute;
    right: 1%;
    bottom: 20%;
    animation: sm-img 1s ease forwards;
}
.item-3 .sm-img  img{
    width: 100%;
    display: block;

}

.item-3 .img-3{
    width: 10%;
    min-width: 100px;
    position: absolute;
    left: 10%;
}
.item-3 .img-3 img{
    width: 100%;
    display: block;
}

.item-3 .img-3{
    top: 70%;
}


.item-3 .img-3 {
    transform-origin: top left;
    transform: rotate3d(0, 0, 1, 60deg);
    animation: hinge 2s ease infinite;
}
.item-3  .skills span {
    position: absolute;
    left: 50%;
    top: 80%;
    color: #000000;
    transform: scale(.5);
}
.subject-1{font-size: 48px; margin-left: -400px; margin-top: -50px;}
.subject-2{font-size: 18px; margin-left: -250px; margin-top: 40px;}
.subject-3{font-size: 14px; margin-left: -270px; margin-top: 10px;}
.subject-4{font-size: 20px; margin-left: -200px; margin-top: -30px;}
.subject-5{font-size: 20px; margin-left: -120px; margin-top: 50px;}
.subject-6{font-size: 30px; margin-left: 81px; margin-top: -35px;}
.subject-7{font-size: 16px; margin-left: 0px; margin-top: -40px;}
.subject-8{font-size: 20px; margin-left: 10px; margin-top: 10px;}
.subject-9{font-size: 18px; margin-left: 2px; margin-top: 41px;}
.subject-10{font-size: 18px; margin-left: -150px; margin-top: 10px;}

.item-3  .skills span {
    animation: bounceIn 2s linear forwards;
}

.item-3 .skill-introduce {
    text-align: left;
    position: absolute;
    top: 20%;
    left: 5%;
    color: #000000;
}
.item-3 .skill-introduce a{
    display: block;
    width: 40px;
    height: 40px;
}
.item-3 .skill-introduce a img {
    display: block;
    width: 100%;
}
.skill-introduce .media-body p{
    font-size: 14px;
    color: #000;
    font-family: microsoft yahei, sans-serif;
}
.skill-introduce .media {
    margin-bottom: 20px;;
}
.skill-introduce .media:nth-child(1) {
    opacity: 0;
    animation: bounceInLeft 2s linear forwards;
}
.skill-introduce .media:nth-child(2) {
    opacity: 0;
    animation: bounceInRight 2s linear forwards;
}
.skill-introduce .media:nth-child(3) {
    opacity: 0;
    animation: bounceInDown 2s linear forwards;
}